Buffing machine



Nov. 18, 1924. L. w. WHEATON BUFFING MACHINE Filed Sent. 25, 192B EShetSShet l Nov.

1,515640 L. W. WH EATON BUFFING MACHINE Filed Sem. 25 1922 5 shets-sheet2 :Enz/671707" www@ Nov. 18, 1924.

1,515,640- L. W- WHEATON BUFFING MACHINE Filed sem. 25. 192? 5sheets-sheet 3 Ill' ITL 1/@717107 Nov, 18; 1924.

L. w. WHEATON BUFFING MACHINE Filed Sent, 25. 5 Sheets-Slv'xeet 4 I!!silli iii,

Nov. 18, 1924.

L.. W. WH EATON BUFFING vMACHINE 5 Sheets-Sheet 5 FiledvSent. 25. 1922kl l) Patented Nev. i8, 1924.

narran STAT-Es Param" Aermee.'

LEWISW. W'HEATON, OF BUFFALO, NEW'YORK, ASSIGNOR T0 AUTOMATIC BUFFING-MACHINE COL, OF BUFFALO, NEW YORK, A CORPORATION OF NEVI YORK.

:BUFFING MACHINE.

Application filedy September 25, 1922.` Serial No. 590,232.

T all whom t may concern:

Be 1tknown that I, Lnwis W. W H'nA'roN,

citizen of the United States, residing at Bufe faloJ in the county ofErie and State of New York, have invented new and usefulY improvementsin Buing Machines, of which the` following is a specification. v

This invention relates to a buinigmac'hinej of the general type shown inLetters Patent of the United States No. 911,261, and adaptetl forbufling and polishing articles by mounting the same ona mandrel andholding the same in engagement with a hufng or polishing wheel.

The object of this invention is to provide means for supporting thearticle to be buffed and presenting the sameto the bufiing Wheel in suchmanner that successive articles will engage this wheel in exactly thesame direction and at the same angle, thereby preserving the form of theface of the buiiing Wheel after the same has been once shaped to thesurface to be buffed or polished and reducing the wear on the same.

Another object of this invention isto'so organizethe machine that Wearon the buffing wheel may be taken up Without disturbing the matchingengagementV- between the peripheral face of the buiiing wheel and thesurface of the articles'tol be buffed.

Ei further object of this invention is to provide means whereby themandrel or work holder may be moved away from the bufling wheel forremoving a finished work piece and substituting an'unfinished oneandmoving the mandrel toward. the buhing wheel with the work piece andlocking the same in a definite predetermined position, so that theoperator is relieved of the necessity of adjusting each work piece orblank separately, thereby saving time and increasing the output of themachine accordingly.

in additional object of the invention is to provide simple and eiiicientmeans whereby the work piece may be presented at an angle to the buiiingWheel andthus cause the latter to cross the spinning marks on the' sameand produce a uniformly finished surface.

still further purpose of the invention is to provide improved means forconveniently raising and `lowering the supporting table to suit therequired position. of kthe l work piece relatively to the bufiing wheeleither While setting up the machine or when.

shifting the work piece, sof that Vthe bufiing wheel operates thereon atan angle to remove spinning marks.

In the a-ccompanying drawings: Figure 1 is a front elevation of aloufiing machine embodying my improvements. Figure 2 is an end elevationthereof. Figure 3 is a fragment-ary verticall longitudinal Section takenon line 3-3, Fig. 2. Figure 4 is a cross section on line H, Fig. 3.Figure 5 is ahorizontal sect-ion on line 5-5, Fig. 3. Figure 6 is avertical section, on an enlarged scale, on line 6-6, Fig` 1. Figure 7yis a vertical section on lline 'fl-7, Fig. 3., Figures 8 and 9 arekhorizontal sections on the correspondingly numbered lines in Fig. 6.Figure 10 is a fragmentary horizontal section,

on an enlarged scale, taken on line 10-10,.. Fig. l. Figure 11 is afragmentary plan View, showing the manner of Vusing the ma-` chine whenbuiiing conical articles'.

Corresponding numerals in the following specification indicate similarvparts .throughout the several figures of the drawings.

The stationary part or lframe of' the ma-k chine upon which the movableparts of the same vare -mounted, consists of abase or pedestal 10 whichis hollow and ofA up- Wardly tapering form and rests With kits lowerlarge end on the floor While its upper reduced end has the form of anupright tubular neck 11. Abovethe base is arranged a horizontal liftingtable 12 which is capable of vertical adjustment thereon for a purposewhiehvvill presently appear. This table is provided on its under sidewith adepending rtubular shank 13 which is guided in the neck of thebase so as to be capable oi' lsliding but held against turning thereon.

yVertical movement of the shank in the neck is e'ected by an uprightlifting screw 1l.- which has an external screw thread 15 on its upperpart engaging with an'internal thread 16 on the shank l18 while itslower end turns in a bearing opening 17 formed in a web 18 within thebase and is provided with an external annular flange 19 resting on saidweb, as shown in Fig. 6. Upon turning this Screw in one direction oranother,

the shank and associated parts are raised or lowered. This turning isetl'ected by means of a pin wrench 2O adapted to be assed through ahorizontal slot 21`in the ower fro-nt part of the base and engaged withone or another of an annular row ot openings 22 in the flange 19 of thelifting screw.

After the shank has been adjusted vertically to the desired position,the same is held lirmly in place by pro-viding the hollow neck of thebase on one side with a vertical slot 23 and drawing the parts of thisneck on opposite sides ot this slot, together by means of one or morehorizontal clamping bolts 25 each of which connects two lugs 24 arrangedon the exterior of the neck on opposite sides of said slot. In order toprevent the shank Jfrom turning on the neck, they same is provided witha laterally projecting dowel or key 2G which slides vertically in theslot 23, as shown in Figs. 1 and 6.

Upon its upper side the lifting tablevhas secured thereto a longitudinalhorizontal guideway 27 upon which a lower carriage or slide 28 ismovable in the direction of the length of the machine. Although variousmeans may be employed Jor effecting the longitudinal movement of thelower carriage or slide, this is preferably accomplished by a horizontaladjusting screw 29 arranged parallel with the guideway 27 and journaled1 in a bearing 30 at one end thereof, so as to loe capable ot turningbut held against lengthwise movement, The screw engages with a screw nut31 on the underside ot the lower carriage and is provided at oney endwith a hand wheel 32 for turning the same.

On its upper side the lower carriage is provided with a horizontaltransverse guideway 33 on which an upper carriage or slide 34 is guided,so as to move crosswise of the machine. This crosswise movement oftheupper carriage is preferably effected byr a horizontal transverseadjusting screw 35 arranged parallel with the transverse guideway andjournaled in a bearing 85 at one end thereof, so as to be capable ofturning but held against longitudinal movement. This transverseadjusting screw engages with a screw nut 87 on the underside ot thetransverse carriage and is provided at its front end with a hand wheel38 for manipulating the same.

.Projecting upwardly trom the transverse slide 0r carriage is a post 39which is provided at its upper end with aV pintle 40 having its axisarranged vertically and providedL between its upper 4and lower ends witha lower head or flange 41. Resting on this head or flange andr rotatableon the same and around the pintle 40 is a locating disk 42. Immediatelyabove the post is a horizontal saddle 43 which forms the lower part of aturret and which has a swivel connection with the post, so as to becapable of turning about a vertical axis. This swiveling connectionpreferably consists ot a -cylindrical socket 44 projecting downwardlyfrom the central part of the saddle 4and turning on the periphery ofsaid pintle,

an upper head or flange 45 projecting laterally from the lower end ofsaid socket and resting on said disk 42, a circular stud 46 proj e-ctingfrom the topl ot said pintle through an opening 47 in the top of saidsocket and a retaining screw 48 secured to said stud and bearing bymeans of a washery 49 against the upper side ot said pintle forconfining the same on the post.

'lhe upper 'head 45 is adapted to be adj usted circumferentially on thelocating disk and then held in place relatively thereto, this beingpreferably accomplished by two segmental slots 50 arranged in the upperhead on opposite sides of the saddle, and two clamping bolts 51extending through these slots and engaging their lower threaded ends inthe locating disk while the heads of these bolts bear against the upperside of said upper head.

The locating disk is locked against rotation when in a predeterminedposition relatively to the lower head 42 by means ot a verticallymovable locking pin or catch 52 guided on said cross slide and lowerhead and adapted to engage its upper end with a locking opening 53 inthe locating disk, a spring 54 surrounding said catch and bearing at itslower end against said cross slide and at its upper end against a collar55 on the catch for holding the latter yieldingly in its elevatedoperative position, and an elbow shaped operating'lever having a lowerhorizontal arm 56 which is pivoted on the post by a horizontal pin 57and provided with an opening 58 for the passage of the catch pin andengages its underside with the topl of the collar 55, and an upper arm59 projecting upwardly from the front end ot said lower arm, as shown in.lVF (S and 9. i

Above the saddle is arranged a yoke which forms the upper part ot theturret and which has an upper horizontal longitudinal 'bar 60 and arms61, 62, depending from the front and rea-r ends of this bar. The yoke isso mounted on the saddle as to be coinpelled tol turn therewith about avertical axis, but the yoke is `capa-ble of tilting about a horizontalaxis for a purpose which will be explained later on. The means tor thustilting the yoke relatively to the saddle and holdino` the same in placeatter adjustment comprise a horizontal pivot bolt 63 connecting thefront yoke arm with the adjacent front end ot the saddle and a clampingscrew 64 secured to the rear end of the 65 in the rear yoke arm andadapted when tightened to clamp the yoke securely against verticalmovement on the saddle.

The work piece or article 66 to be bued or polished is supportedon achuck, manf drel or holder 67 which is carried on one end of a baitingshaft 08. The latter is normally arranged horizontally and theconnection between the same and the chuck is preferably affected byboring a recess 69 in the rear end of they latter and securing the frontend of the buiiing spindle by a set yscrew 70, as shown in Fig. 5. Thearticle to be buffed may be varied in form, thel 'example shown in thedrawings being acup having a cylindrical body and a head closing -thefront end of the body and the chuck being of corresponding form to fitthis ar` ticle. The bui'ling shaft is so mounted on the yoke thatthesarne rotates about its* axis or the same mayhave combined rotary andlongitudinally reciprocating movement depending on the character of thework which is being buiied. For the presentiit will be assumed that thebufiing shaft yrequires a rotary andlongitudinal movement as would bethe case when buffing the comparatively long cylindrical body of the cupor can shown in the drawings, in Yorder to bring all parts of this bodyinengagement with the periphery of the bufiing wheel 71v and still notmake theklatter unduly' wide.

f ing therefor and with its rear part in al This buffing wheel may bemounted in any suitable way but preferably on the Yend of a spindle 72which' is journaledso that the same is horizontal and parallel with thepath of the longitudinally movable carriage and which may be rotated byanysuitable means. As best shown in Figs. 8, 4,5 and 7, the bufiingshaft is mounted with its front part in a bearing sleeve 73, forming abeardriving sleeve 74.- forming part of the means for driving the shaft.The bearing sleeve 73 is capable of sliding lengthwise in an opening 75in the front arm of the yoke and the buiiing shaft'is compelled to movelengthwise with the same by krfront and rear collars 76, 77, secured tothe bufiing shaft and engaging with the front and rear ends of thebearing sleeve. The latter is however prevented from turning in the yokeby means of a spline 78 arranged on the yoke 'and engaging alongitudinal groove l79 in the underside of the bearing sleeve, Thedriving sleeve 'Tet is capable of turning in a bearing opening S0 in therear arm of the yoke and the bufling shaft is compelled to turntherewith but is free Vto slide'therein by a spline 81 arranged on thissleeve and engaging with a longitudinal'groove 82 in the builing shaft.The driving sleeve is however held against lengthwise movement in itsbearing by a front bevel gear wheel 83 secured to the front end of thissleeve in a bearing 86 in the bar of the yoke and provided at its lowerend with-a bevel gear pinion L86 which meshes with the front gear wheel83. Motion is transmitted to the driven shaft by an intermediatetransmitting mechanism from an overhead driving shaft 87 which isljournaled horizontally in suitable bearings 88 on the ceil-v ing andprovided with driving belt pulleys 89. This intermediate transmittingmech anism is so organized that the same is flexable and ypermits theyoke and associated gearing to be raised and lowered and also shiftedhorizontally in order to adapt the work piece to the bufling vwheelwithout however disturbing the. driving connection between the severalparts'. ln the preferred form` of its" transmitting mechanism as shownin Figs. 1, 2 and 3, the same comprises a swivel bracket 90 journaled onthe drivingV shaft-87 so as to swing about the axis of the same andprovided with a vertical bearing 91, adriven gear lwheel 92v meshingwith a driving gear wheel 93 on the 'driving shaft 87 and having atubular hub 95 journaled in the vertical bearing 91 on the swivelbracket, an upper sliding shaft 96 sliding vertically in the tubular hub95 but splined ythereto by a spline 97, so as to becompelledto turntherewith, and an upright intermediate shaft 98 connected at itsupperand lower ends by universal n joints 100, 101., with `the lower end ofthe sliding shaft v96 and the upper end of the lower vertical shaft 85.

The longitudinal movement of the buiiing shaft and the parts connectedtherewith is effected by the following mechanism:

102 represents a crank disk pivoted on the rear arm of the yoke by a pin103 and rotated by means of a. driven bevel gear wheel 104 pivoted by apin 105 on the rear end of the yoke bar and meshing with the rear bevelgear wheel 84, and a gear pinion 106 turning with the bevel gear wheel'104 and meshing with a gear rim 107 on the periphery of the cra-nkdisk. .y On its outerl side the latter is provided with an undercutadjusting channel 108 extending diametrically across the saine whichreceives the nut of f an adjustable wrist bolt 109. Mounted on. theshank or body of this bolt and engaging the outer side of the guidechannel is a washer 110. Upon tightening (i tl the bolt 109 a shoulder131 on its-shank engages the outer side of the washer 110 and pressesthe same against the outer sideof the channel 108 while its thread drawsthe nut 130 against theinner side of the same,-

rotates but does not reciprocate, this being suitable for butlingcertain kinds of work. On the front end of the bearing sleeve 73 ismounted a cross head 111 which is connected with the crank disk so as tobe actuated thereby. In the preferred construction this is accomplishedby a pitman which is' capable of yielding lengthwise when vsubjected toexcess pressure and which comprises a front connecting rod section 112provided at its front end with a pivot head 113 which is pivoted by apin 114 to the outer side of said cross head, a rear connectingrodsection 115 pivoted at it rear end on the Wrist bolt Abetween the head132 5 thereof `and the washer 110, a cross piece or coupling 116 capableof longitudinal adjustment on the front end of the rear rod section1.15l by means of a set screw 117 and also slidable lengthwise on therear end of f' the front rod section 115,V a spring 118 surrounding thefront rod section and interposed between the pivot head 113 and thecross piece or coupling 116, and a pin 119 secured to the rear end ofthe front connecting rod section and .serving as a stop to limit theexpansion of the spring 118 and the backward movement of the coupling onits rod,` as shown in Figs. 1, 5 and 10. The spring 118 is suiicientlystiff so that the pitman is practically rigid when the work piece on thechuck is moved with its outer side back and forth past the buffing wheelbut when an end press is exerted by Vthe batting shaft, as for instance,whenr bmnishing the inner side of a cup shaped blank up to the innerside of its head, at which time the spring l113 will yield when thestroke of the crank disk is such that the same continues its throw afterthe bufting wheel has reached the bottom of the blank and therebyprevents injury to any of the parts.

IVhen the shape of the article to be buifed permits, for instance whenbuiiing cupshaped articles as shown in Figs. 1, 2, 3 and 5, the same isalso support-ed on the outer side of its head or bottom, the preferredmeans for this purpose being constructed as follows:

- 120 represents a horizontal supporting' islas-ae rod arrangedlengthwise above the buiug shaft and lchuck and capable of longitudinaladjustment on the cross head 111'by a post 121 rising from the crosshead and provided withfa sleeve 122 in which the supporting rod isadjustably secured by a set screw 123. The outer side of the bottom orhead Vof the article being buft'ed is engaged by a support-ing disk 124which is preferably capable of rotation in a bearing 125 which is somounted that the supporting disk is capable of movement toward and fromthe work piece to permit of holding the same and replacing it whenfinished by another unfinished one. For this purpose, a guide sleeve 126is slidably mounted on the supporting rod 120 and connected by avertical clamping arm or rod 127 with the bearing 125 in which the pivotpin 129 of the ksupporting disk 124: turns. Y

The sleeve 126 is pressed backwardly by a spring 130 surrounding the rod120 and bearing at its rear end against this sleeve while its front endbears against an adjustable screw nut 131 engaging with the threadedfront end of the rod and adapted to be turned by the hand wheel 132 andheld in its adjusted position by a set screw 133.

In order to enable the operator to conveniently and quickly center thesupporting disk 1241. relatively to the work piece and retain the samein place during the operation of the machine, the inner or rear end ofthe guide sleeve 126 is provided with a locking recess 134 whichreceives acorresponding key 135 on a cellar 136 secured to the adjacentpart of the supporting rod. `When the buiiing of an article has beenfinished, the clamping arm 127 is moved forwardly and upwardlysufliciently to release the' article and permit its removal from thechuck and' substitution of another article to be buffed, as shown bydotted lines in Fig. 1.

If the character of the article is such that the pressing or holdingdevice is not required, then the same may be swung upwardly into aninoperative position, as shown by dotted lines in Fig. 1, or removedfrom the machine.

In setting up the machine, the longitudinal guideway 27 is preferably'arranged parallel with the spindle of the bufling wheel and the severalsupporting members are raised, so as to bring the lmlling shafthorizontally in line with the axis of the betting wheel.

Assuming that the article is comparatively longv and cylindrical, andthat its surface cannot be covered at one time by the peripheral face ofthe bufling wheel, as for instance the cylindrical shell shown in Figs.l, 3 and 5, the bufing shaft is adjusted so that the same is parallelwith the b ulfing wheel, and the stroke mechanism is adjusted so as toreciprocate the betting shaft llO and carry the article back an'dlforthfar enough to present the entire surface of the article which is to bepolished to the bufling Wheel. Preparatory to operating the ma-V chine,the parts are set to bring the same into this position by first movingthe longitudinally movable carriage to such a posi'- tion that thearticle to be buffed ywill bein the required longitudinal positionrelatively to the buffing wheel. f

rlhe turret consisting mainly 4of the yoke and saddle is then turnedhorizontally on the post 'of the upper transversely movable carriage,while the bolts 51 are loose and the latch 52 is hold-ing the locatingdisk-42 against turning, until the buhng shaft is parallel with thebuiiing wheel, after which the clamping bolts 51 are tightened. Thetransversely movable carriage is next moved backwardly suiciently toengage the cylindrical body of the blank with the peripheral surface'ofthe bufhng wheel under the desired pressure. Upon starting the machine,the article will' be reciprocated lengthwise inI engagement with thebuffing wheel for` a sufficient length of time to give the saine therequired polish or burnish. lhile this bufiing opera-tion is inprogress, the turret which supports the bulfin-g shaft is held againstturning horizontally onthe post of the transverse carriage by the catchon the latter engaging with the locating dis; secured to the saddle.When bufling of the article has been completed, the operator firstreleases the turret by withdrawing the Ncatch 52 and then turns theturret horizontally by means of a handle or gripl 137 preferablyarranged on the cross head of the bearing sleeve, so that the article ismoved forwardly away from the periphery of the buiing wheel. Thefinished article is now removed from the chuck, an unfinished articlesubstituted therefor,HV and the turret isagain turned horizontally inthedirection for en-i gaging the article with the buliing wheel and whenthis is done, the catch automatically interlocks with the locating diskand holds the turret in the adjusted operative position. The operatortherefore need -pay no Vattention when swinging the chuck toward thebuiiing wheel in order to get they required contact between the buiiingwheel and the article to be buffed, inasmuch as this has beenpredetermined by the initial adjustment of the chuck relatively7 to thebufiing wheel, so that the snapping in of theeatch always definitelylocates the article relatively to the b'uiing wheel. f `When theperiphery of the latter becomes worn, it is only nec'- essary to movethe transverse carriage backwardly the required extent to take up thewear on the bufflng wheel without disturbing the adjustment of anyoftheV other parts ofthe machine. j n l lf the article to be buffed iscomparatively stantially the form of a cone, the side 139 of which isarranged at an angle to the axisk of the chuck 140 0n which the same ismounted, then the chuck is connected with the buffing shaft by a specialfitting which is shown in Fig. 11, but the longitudinal carriage stillreciprocates parallel to the axis of thecbuffing wheel, so as to bringall parts of the surface of the conical article into engage@` ment withrthe buffing wheel. This special fitting comprises a bracket 141 securedto the front end of the bearing sleeve 73, av

swiveling yoke 142 pivoted to the bracket 141 and adjustably connectedtherewith by a pivot and clamping bolt 143, an angle bufhng shaftextension 168 journaled on the yoke and carrying the chuck 140, adriving bevel wheel 144 secured to the buihng shaft 68, a driven bevelwheel 145 connected with the bufling shaft extension and an intermediatebevelgear wheel' 146, meshing with said driving and driven bevelrwheelsand mounted to turn con'centrically with the pivot and clampingbolt 143.v Upon loosening the latterjthe extension bufiing shaft may be arrangedat various angles `to the axis of the butfing wheel to suit therequirements of thework in hand, The chuck 140 maybe locked bythe catch52 in its operative positionin which itsaxis is arranged at an angle tothat of the bufng wheel and the same may be swung forwardly tok permitof substituting an unfinished for a finished article on the chuck. l f

If desired, however, the parts may be so adjusted that when the chuck isholding an article in engagement with the buffing wheel, the axis of thechuck and bufling shaft may7 be inclined backwardly relatively to thelongitudinal carriage, as shown by the brokenvline 142 in Fig. 5, andmay be inclined forwardly relatively to the same, as shown bythe brokenline 148 in the same ligure, into the position for exchanging thefinishedI for the unfinished article. Y

By thus employing a catch for holding or locking the chuckin a definiteposition relatively to the buffing wheel and preferably one whichoperates automatically when the chuck reaches its working position,successive work pieces will always be presented to the vbuffing wheel inexactly the samemanner and subjected to the saine buffing action withoutrequiring any care on the part of the operator, other than adjusting therelative position of the parts to take up the wear on the bufling wheel.This is particularly advantageous when polishing or buffing articleshaving circumferential bands, beads or other ornamental formation whichnecessitates forming the peripheral surface of the bu'fiing wheel tocorrespond to the shape of the surface being buffed. In such a sase, thesuccessive articles are all presented to the buihng wheel in exactly thesame position, so that after the periphery of the latter has been onceformed to correspond with the surface of the article to be buffed, thesame will match each other and the butting operation will proceed theinstant that the article and bufling wheel are brmight together.Obviously this effects a great saving in the cost of bu'fhng wheelsinasmuch as the peripheral shape of the bufiing wheel after the same isonce formed, is not disturbed except that it will wear back uniformlyand preserve its shape, but there will be no continuous tearing up ofthe periphery of the bufling wheel by constantly presenting the articlesto be buifed indiscriminately and irregularly thereto and thus causing`undue wear of the buffing wheel and cost in maintenance.

If the article to be bued contains circumferential spinning marks whichwere produced in course of its manufacture and ordinary bufling will noteliminate the same, then the chuck is adjusted into such a posie tionthat the bufting wheelwillrcross these spinning marks at an angle andthereby remove the same from the article at the same time that it ispolished. This is accomplished by shifting the rear end of the yokevertically relatively to the saddle so that the bufiing shaft inclinesrelatively to the axis of the buliing wheel, as shown by dotted lines inFig. 3, this adjustment being possible due to the pivotal connection 63between the front ends of the yoke and sad-V dleof the turret and thebolt and slot connection 64, 65 between the rear ends of these elements.

Then said yoke is adjusted to tilt the buiing shaft for the purposementioned, a corresponding vertical adjustment of the table 12 on thebase must be effected in order to compensate for any dislocation andmaintain the work piece in the proper position against the buflingwheel.

Due to the various adjustments which have been provided between theseveral parts of this machine and the relative arrangement andconstruction of the same, this machine is capable of universal use inbuiling articles having a wide variety of shapes and renders itpossibleto effectively buff such articles expeditiously, conveniently,and economically.

I claim as my invention:

1. In a machine of the character described, a hollow base having atubularneck provided with an external screw threadz which engages thethread of said shank.

2. In a machine of the character described, a base provided at its upperend with a ver-- tical tubular guide, a table provided with-a dependingthreaded shank slidable vertically in said guide, and adjusting screwjournaled in said base and having its thread engaging with the thread ofsaid shank, said-tubular guide `being provided with a vertical slot, anda key arranged on said 1 shank and sliding vertically in said slot.

8. In a machine of the character described, a base provided at its upperend with a tubular neck which has a longitudinal slot and external lugson oppposite sides of said slot and a bearing web below said neck, atable having a depending shank which is slidable vertical in said neckand provided with an internal screw thread, an adjusting screw rotatablymounted on said web and having an external screw thread engaging withthe thread of said shank, a key arranged on said shank and engaging withsaid slot, and a clamping bolt connecting said lugs.

fl. In a machine of the character described, a base, a longitudinallymovable carriage mounted on said base, a transversely movable carriagemounted on the longitudinally movable carriage, an intermediate memberrotatably mounted on said transversely movable member, a supportrotatably mounted concentrically with said intermediate member, meansfor adjusting said support circumferentially relatively to saidintermediate member, means for locking said intermediate member againstturn` ing on said transversely movable carriage, and a rotary work`supporting spindle mounted on said support.

5. In a machine of the character described, a horizontally movablecarriage, an intermediate member rotatable on said carriage, a supportrotatable about anaxis concentric with said intermediate member, meansfor adjusting said support and intermediate member circumferentiallyrelatively to each other, means for locking said intermediate member andcarriage against rotation one relatively to the other, and a. rotarywork supporting spindle mounted on said support.

6. In a machine of the character described, a post provided at its upperend with a pintle and a lower head, a locating llO an upper' headarranged above said locating disk, a rotary work supporting spindlemounted on said saddle, vmeans for circum ferentially adjusting saidsaddle on said locating disk, and means vfor locking said locating diskagainst rotation on said post.

7. In a machine of the character described, a post provided at its upperend with a pintle and a lower head, a locating disk resting on the lowerhead and rotatable around Said pintle, a saddle having a socket turningon said pintle and provided with an upper head arranged above saidloca-t- --ing disk, a rotary work supporting spindle mounted on saidsaddle, means for circumferentially adjusting said saddle on saidlocating disk comprising a segmental slot formed in said upper head anda clamping bolt arranged in said slot and' operating to press saidlocating disk and upper head together, and means for locking saidlocating disk against rotation on said post.

8. In a machine of the character described, a post provided at its upperend with a pintle and a lower head, a locating disk resting on the lowerhead and rotatable around said pintle, a saddle having a socket turningon said pintle and provided with an upper head arranged above saidlocating disk, a rotary work supporting' spindle mounted on said saddle,means for circumferentially adjusting said saddle on said locating disk,means for locking said locating disk against rotation on said post, alocking opening arranged in the locating disk, a catch guidedk on thelower head and movable into and out of said opening, a spring foryieldingly holding said catch in engagement with said opening, and alever for disengaging said catch from said opening and having' alowerhorizontal arm pivoted at its rear end on the post and ac tuatingsaid catch and an upper vertical arm projecting upwardly from the frontend of said lower arm I 9. In a machine of the character described, asupport comprising a lower member, an upper member pivotally mounted onthe lower member, so as to be capable of tilting vertically on thelatter in a plane arallel with the length of said upper memaer and abulfing shaft journaled on said upper member' lengthwise of the latter.

10. In a machine of the character described, a support comprising alower member, an upper member pivoted at one end to the correspondingend of the lower member so as to be able of swinging vertically, meansfor vertically adjusting the other end of said upper member relativelyto the lower member, and a buffing shaft journaled on said upper member.

ll. 'In a machiney of the character 1described, a support comprising alowers-adN die, an upper yoke having a vdepending front arm pivoted tothe. front end of ,saidsaddlm and also having a depending rear ajim,v an

adjusting device between the rear end of said saddle and Asaid rear armcomprising a clamping bolt passing through said slot and connectingsaid. saddle with said rear arm, and a bufring shaft journaled on saidarms of the yoke.

l2. In a machine of the character de-A scribed, a post, a turret havinga lower saddle rotatable on said post about a vertical axis, a yokemounted on said saddle and capable of being tilted vertically thereon,and a bufling shaft journaled on said yoke.

13. In a machine of the character described, a post, a turret having alower saddle rotatable on said post about a vertical aXis, a yokekmounted on said saddle and capable of being tilted thereon, a buliingshaft j ournaled on said yoke, a transversely movable carriagesupporting said post, and a longitudinally movable carriage supportingsaid transversely movable carriage.

14:. In a `machine of the character described, a pest, a turret having alower saddle. rotatableon said post aboutV a vertical aXis, a yokemounted on said saddle and capable of being tilted thereon, a bufiingshaft journaled on said yoke, atransversely movable carriage supportingsaid post, a longitudinally movable carriage supporting saidtransversely movable carriage, a base, and a table carrying saidlongitudinally movable carriage and adjustable on said base.

l5. In a machine of the character described, a support, a driving sleevejournaled on said support, a buliing shaft slidable in said drivingsleeve but compelled to turn therewith, a driving shaft j ournaled onsaid support and geared to cne end of said sleeve, and means forreciprocating said buting shaft geared to the other end of said sleeve,

16. In a machine of the character described, a support, a driving sleevejournaled on said support, a buliing shaft slidable in said drivingsleeve but compelled to turn therewith, a driving shaft journaled onsaid support and geared to one end of said sleeve, and means forreciprocating said bufling shaft comprising a crank disk mounted on saidsupport, a pitman operatively connected with said crank disk and saidbufling shaft, a pinion geared to said crank disk, and co-operating gearwheels connected respectively with said pinion and the other end of saiddriving sleeve.

17. In a machine of the character described, a support, a driving sleevej ournaled on said support, a buiiing shaft slidable in said drivingsleeve but compelled to turn therewith, a driving shaft journaled onsaid support and geared to one end of said sleeve, and means forreciprocating,- said bufling shaft comprising a crank disk mounted onsaid support, a pitlnan operatively connected Witli said crank disk andSaid bnfling shaft, a pinion geared to said crunk disk, (3o-operatinggear Wheels connected respectively with said pinion and the other end ofsaid driving sleeve, and a pivot on said support for said pinion andlike respective gear wheel.

LEWIS W. WHEAFIVON

